checking oil INFINITI QX4 2005 Factory Workshop Manual

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
C
D
E
F
G
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K
M
SECTION MA
A
B
MA
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tool ......................................... 4
GENERAL MAINTENANCE ....................................... 5
General Maintenance ............................................... 5
PERIODIC MAINTENANCE ....................................... 7
Introduction of Periodic Maintenance ....................... 7
Maintenance For Off-road Driving (4WD only) ......... 7
Schedule 1 ............................................................... 7
EMISSION CONTROL SYSTEM MAINTE-
NANCE .................................................................. 7
CHASSIS AND BODY MAINTENANCE ............... 8
Schedule 2 ............................................................... 9
EMISSION CONTROL SYSTEM MAINTE-
NANCE .................................................................. 9
CHASSIS AND BODY MAINTENANCE ............. 10
RECOMMENDED FLUIDS AND LUBRICANTS .......11
Fluids and Lubricants ..............................................11
SAE Viscosity Number ........................................... 12
GASOLINE ENGINE OIL .................................... 12
ANTI-FREEZE COOLANT MIXTURE RATIO ..... 12
ENGINE MAINTENANCE ......................................... 13
Checking Drive Belts .............................................. 13
DRIVE BELT TENSION ...................................... 13
Changing Engine Coolant ...................................... 13
DRAINING ENGINE COOLANT ......................... 13
REFILLING ENGINE COOLANT ........................ 14
FLUSHING COOLING SYSTEM ......................... 15
Checking Fuel Lines ............................................... 16
Changing Fuel Filter ............................................... 16
Changing Engine Air Cleaner Filter ........................ 16
VISCOUS PAPER TYPE ..................................... 16
Changing Engine Oil .............................................. 17
Changing Oil Filter ................................................. 17
REMOVAL ........................................................... 17
INSTALLATION ................................................... 17INSPECTION AFTER INSTALLATION ................ 18
Changing Spark Plugs ............................................ 18
REMOVAL ........................................................... 19
INSPECTION AFTER REMOVAL ....................... 19
INSTALLATION ................................................... 20
Checking EVAP Vapor Lines .................................. 20
CHASSIS AND BODY MAINTENANCE ................... 21
Changing In-cabin Microfilter .................................. 21
Checking Exhaust System ...................................... 22
Checking A/T Fluid ................................................. 22
Changing A/T Fluid ................................................. 24
Changing Transfer Fluid ......................................... 24
DRAINING ........................................................... 24
FILLING ............................................................... 25
Checking Transfer Fluid ......................................... 25
FLUID LEAKAGE AND FLUID LEVEL ................ 25
Checking Propeller Shaft ........................................ 25
Checking Final Drive Oil ......................................... 25
Changing Final Drive Oil ......................................... 25
Balancing Wheels ................................................... 26
REMOVAL ........................................................... 26
WHEEL BALANCE ADJUSTMENT ..................... 26
Tire Rotation ........................................................... 28
Checking Brake Fluid Level and Leaks .................. 28
Checking Brake Lines and Cables ......................... 28
Checking Disc Brake .............................................. 28
ROTOR ................................................................ 28
CALIPER ............................................................. 29
PAD ..................................................................... 29
Checking Steering Gear and Linkage ..................... 29
STEERING GEAR ............................................... 29
STEERING LINKAGE ......................................... 29
Checking Power Steering Fluid and Lines .............. 29
CHECKING FLUID LEVEL .................................. 29
CHECKING LINES .............................................. 30
Checking Axle and Suspension Parts .................... 30
FRONT AND REAR AXLE AND SUSPENSION
PARTS ................................................................. 30
DRIVE SHAFT ..................................................... 30

MA-4
PREPARATION
Revision: October 20052005 QX56
PREPARATIONPFP:00002
Special Service ToolsELS001UW
The actual shapes of the Kent-Moore tools may differ from those of the special service tools illustrated here.
Commercial Service ToolELS001UX
Tool number
(Kent-Moore No.)
Tool nameDescription
KV10115801
(J-38956)
Oil filter cap wrenchRemoving and installing oil filter
a: 64.3 mm (2.531 in)
KV991J0010
(J-23688)
Engine coolant refractometerChecking concentration of ethylene glycol in
engine coolant
KV991J0070
(J-45695)
Coolant refill toolFilling cooling system
NT375
W BIA0539E
LMA053
(Kent-Moore No.)
Tool nameDescription
Power toolLoosening bolts and nuts
Spark plug wrench Removing and installing spark plug
PBIC0190E
S-NT047

MA-24
CHASSIS AND BODY MAINTENANCE
Revision: October 20052005 QX56
Changing A/T FluidELS001C1
1. Run the engine to warm up the ATF.
2. Stop the engine.
3. Remove the bolt for the ATF level gauge.
4. Drain the ATF from the drain plug hole and refill the transmission
with new ATF. Always refill same volume with drained fluid and
use the dipstick to check the fluid level as shown. Add fluid as
necessary.

To flush out the old fluid from the coolers, pour new fluid into the charging pipe with the engine idling
and at the same time drain the old fluid from the auxiliary transmission oil cooler hose return line.

When the color of the fluid coming out of the auxiliary transmission oil cooler hose return line is about
the same as the color of the new fluid, flushing out the old fluid is complete. The amount of new trans-
mission fluid used for flushing should be 30% to 50% of the specified capacity.
CAUTION:

Use only Genuine NISSAN ATF Matic Fluid J. Do not mix with other fluid.

Using automatic transmission fluid other than Genuine NISSAN ATF Matic Fluid J will cause
deterioration in driveability and automatic transmission durability, and may damage the auto-
matic transmission, which is not covered by the warranty.

When filling the transmission with fluid, do not spill the ATF on any heat generating parts such
as the exhaust manifold.
5. Check the fluid level and condition. Refer to MA-22, "
Checking A/T Fluid" . If the fluid is still dirty, repeat
steps 2 through 5.
6. Install the ATF level gauge in the fluid charging pipe and install the level gauge bolt. Tighten the level
gauge bolt to specification.
Changing Transfer FluidELS001H0
DRAINING
1. Stop the engine.
2. Remove the drain plug and gasket to drain the transfer fluid as
shown.
3. Install the new gasket on the drain plug and install the drain plug
in the transfer. Tighten the drain plug to specification.
CAUTION:
Do not reuse the gasket.
WLIA0014E
Transmission fluid type and capacity : Refer to MA-11, "Fluids and Lubricants" .
Drain plug : Refer to AT-250, "
Components" .
Level gauge bolt : Refer to AT-250, "
Components" .
Drain plug : Refer to TF-144, "
COMPONENTS" .
SM A44 4B

CHASSIS AND BODY MAINTENANCE
MA-25
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MA
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MA
Revision: October 20052005 QX56
FILLING
1. Remove the filler plug and gasket. Fill with new specified fluid
until the fluid level reaches the specified limit near the filler plug
mounting hole as shown.
CAUTION:
Carefully fill the transfer with fluid. Filling should take
approximately three minutes.
2. Leave the vehicle for three minutes and then check the fluid
level again as shown.
3. Install the new gasket on the filler plug and install the filler plug
in the transfer. Tighten the filler plug to specification.
CAUTION:
Do not reuse the gasket.
Checking Transfer FluidELS001H1
FLUID LEAKAGE AND FLUID LEVEL
1. Check for any fluid leaks from the transfer assembly or around it and correct as necessary.
2. Remove the filler plug to check the fluid level at the filler plug
mounting hole as shown.
CAUTION:
Do not start the engine while checking the fluid level.
3. Install the new gasket on the filler plug and install the filler plug
in the transfer. Tighten the filler plug to specification.
CAUTION:
Do not reuse the gasket.
Checking Propeller ShaftELS001C5
Check the front and rear propeller shafts for damage, dents, and cracks. Check the joints for looseness and
any damage. Repair or replace as necessary.
Checking Final Drive OilELS001H3
1. Remove the filler plug.
2. Check the oil level as shown. Add the specified oil as necessary.
NOTE:
Rear final drive shown, front final drive similar
3. Install the filler plug and tighten to specification.
Changing Final Drive OilELS001C7
1. Remove the filler plug.Fluid capacity and grade : Refer to MA-11, "
Fluids
and Lubricants" .
Filler plug : Refer to TF-144, "
COMPONENTS" .
SM A43 9B
Filler plug : Refer to TF-144, "COMPONENTS" .
SM A43 9B
Oil grade and viscosity : Refer to MA-11, "Fluids and
Lubricants" .
LLIA0068E
Filler plug : Refer to FFD-13, "COMPONENTS"
(FFD), RFD-12, "
Components" (RFD).

CHASSIS AND BODY MAINTENANCE
MA-29
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Revision: October 20052005 QX56
CALIPER
Check the caliper for any leaks, repair as necessary.
PA D
Check the pads for wear or damage. Refer to BR-31, "Front Disc
Brake" , BR-32, "Rear Disc Brake" .
Checking Steering Gear and LinkageEL S00 1C D
STEERING GEAR

Check the steering gear housing for looseness, damage and oil
leakage as shown.

Check the steering column connections for looseness.
STEERING LINKAGE

Check the ball joint, dust cover and other component parts for looseness, wear, damage, and grease leak-
age.
Checking Power Steering Fluid and LinesELS001CE
CHECKING FLUID LEVEL

Check the power steering fluid level with the engine off.

Check fluid level on reservoir. Use “HOT” range at fluid tempera-
tures of 50° to 80°C (122° to 176°F). Use “COLD” range at fluid
temperatures of 0° to 30°C (32° to 86°F).
CAUTION:

Do not overfill.

Refer to MA-11, "Fluids and Lubricants" .
SM A92 2A
LMA051
SGIA0506E
LGIA0021E

MA-30
CHASSIS AND BODY MAINTENANCE
Revision: October 20052005 QX56
CHECKING LINES

Check lines for improper attachment, leaks, cracks, damage,
loose connections, chafing, and deterioration.
Checking Axle and Suspension PartsELS001CF
FRONT AND REAR AXLE AND SUSPENSION PARTS
Check front and rear axle and suspension parts for excessive play, cracks, wear or other damage.

Shake each wheel to check for excessive play.

Rotate each wheel to check for abnormal noise.

Check the axle and suspension nuts and bolts for looseness.

Check the strut and shock absorber for oil leakage or other damage.

Check the suspension ball joints for grease leakage and ball joint dust cover for cracks or other damage.
DRIVE SHAFT
Check the boots and drive shaft for cracks, wear, damage, and
grease leakage.
SGIA0506E
SM A52 5A
SFA90 1

PS-1
POWER STEERING SYSTEM
G STEERING
CONTENTS
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SECTION PS
A
B
PS
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions for Steering System .............................. 2
PREPARATION ........................................................... 3
Special Service Tools (SST) ..................................... 3
Commercial Service Tools ........................................ 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Troubleshooting Chart ..................................... 5
POWER STEERING FLUID ........................................ 6
Checking Fluid Level ................................................ 6
Checking Fluid Leakage ........................................... 6
Air Bleeding Hydraulic System ................................. 6
STEERING WHEEL .................................................... 7
On-Vehicle Inspection and Service .......................... 7
CHECKING CONDITION OF INSTALLATION ...... 7
CHECKING STEERING WHEEL PLAY ................ 7
CHECKING NEUTRAL POSITION ON STEER-
ING WHEEL .......................................................... 7
CHECKING STEERING WHEEL TURNING
FORCE .................................................................. 7
CHECKING FRONT WHEEL TURNING ANGLE ..... 8
Removal and Installation .......................................... 8
REMOVAL ............................................................. 8
INSTALLATION ..................................................... 8
TILT SYSTEM ............................................................. 9
Removal and Installation .......................................... 9
TILT MOTOR AND TILT SENSOR ........................ 9
STEERING COLUMN ............................................... 10
Removal and Installation ........................................ 10
REMOVAL ........................................................... 10
INSPECTION AFTER REMOVAL ........................11
INSTALLATION ....................................................11INSPECTION AFTER INSTALLATION ................ 12
Disassembly and Assembly .................................... 13
DISASSEMBLY ................................................... 13
ASSEMBLY ......................................................... 14
INSPECTION AFTER ASSEMBLY ...................... 14
POWER STEERING GEAR AND LINKAGE ............ 15
Removal and Installation ........................................ 15
REMOVAL ........................................................... 15
INSTALLATION ................................................... 16
INSPECTION AFTER INSTALLATION ................ 17
Disassembly and Assembly .................................... 17
DISASSEMBLY ................................................... 17
INSPECTION AFTER DISASSEMBLY ................ 20
ASSEMBLY ......................................................... 21
POWER STEERING OIL PUMP ............................... 26
On-Vehicle Inspection and Service ......................... 26
CHECKING RELIEF OIL PRESSURE ................ 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSTALLATION ................................................... 26
Disassembly and Assembly .................................... 27
INSPECTION BEFORE DISASSEMBLY ............. 27
DISASSEMBLY ................................................... 27
INSPECTION AFTER DISASSEMBLY ................ 28
ASSEMBLY ......................................................... 28
HYDRAULIC LINE .................................................... 31
Removal and Installation ........................................ 31
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 33
Steering Wheel ....................................................... 33
Steering Column ..................................................... 33
Steering Outer Socket and Inner Socket ................ 34
Steering Gear ......................................................... 35
Oil Pump ................................................................. 35
Steering Fluid .......................................................... 35

PS-6
POWER STEERING FLUID
Revision: October 20052005 QX56
POWER STEERING FLUIDPFP:KLF20
Checking Fluid LevelEGS000U9
Check fluid level, referring to the scale on reservoir tank.
Use HOT range for fluid temperatures of 50° – 80°C (122° – 176°F).
Use COLD range for fluid temperatures of 0° – 30°C (32° – 86°F).
CAUTION:

Do not overfill.

Do not reuse any used power steering fluid.

Recommended fluid is Genuine NISSAN PSF or equivalent.
Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRI-
CANTS" .
Checking Fluid LeakageEGS000UA
Check the hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50° – 80°C (122° –
176°F) in reservoir tank. Keep engine speed idle.
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds to
check fluid leakage.
CAUTION:
Do not hold steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)
4. If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not over tighten con-
nector as this can damage O-ring, washer and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to PS-26, "
POWER STEERING OIL
PUMP" .
6. Check steering gear boots for accumulation of fluid indicating a leak from the steering gear.
Air Bleeding Hydraulic SystemEGS000UB
Incomplete air bleeding causes the following. When this happens, bleed air again.

Air bubbles in reservoir tank.

Clicking noise in oil pump.

Excessive buzzing in oil pump.
NOTE:
When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from
oil pump or gear. This noise is normal and does not affect any system.
1. Stop engine, and then turn steering wheel fully to right and left several times.
CAUTION:
Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and
add fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully right and then fully left, hold for about three seconds.
Then check for fluid leakage.
3. Repeat step 2 several times at about three second intervals.
CAUTION:
Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that oil pump may be damaged.)
4. Check for air bubbles or cloudy fluid.
5. If air bubbles or cloudiness still exists, stop engine, perform steps 2 and 3 again until air bubbles or cloud-
iness does not exist.
6. Stop engine, check fluid level.
LGIA0021E
SGIA0506E

STEERING WHEEL
PS-7
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PS
Revision: October 20052005 QX56
STEERING WHEELPFP:48430
On-Vehicle Inspection and ServiceEGS000UC
CHECKING CONDITION OF INSTALLATION

Check installation condition of steering gear assembly, front suspension, axle and steering column.

Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial
direction.

Check if the mounting nuts for steering gear assembly are loose.
Refer to PS-15, "
POWER STEERING GEAR AND LINKAGE" .
CHECKING STEERING WHEEL PLAY
1. Turn tires straight ahead, start engine, then turn steering wheel to the left and right lightly, and measure
steering wheel movement on the outer circumference when steering wheel is turned up to the point where
tires start moving.
CHECKING NEUTRAL POSITION ON STEERING WHEEL

Check neutral position on steering wheel after confirming that front wheel alignment is correct. Refer to
FSU-6, "
Front Wheel Alignment" .
1. Turn tires straight ahead, check if steering wheel is in the neutral position.
2. If it is not in the neutral position, remove steering wheel and reinstall it correctly.
3. If the neutral position cannot be attained by repositioning the steering wheel two teeth or less on steering
stem, loosen tie-rod lock nuts of steering outer sockets, then adjust tie-rods by the same amount in the
opposite direction.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to operating temperature of 60° – 80°C (140° – 176°F).
4. Tires need to be inflated to specified pressure. Refer to WT-34, "
Tire" .
5. Check steering wheel turning force using Tool when steering
wheel has been turned 360° from the neutral position.
6. If steering wheel turning force is out of specification, inspect the
following:

Steering column. Refer to PS-11, "INSPECTION AFTER
REMOVAL" .

Power steering oil pump. Refer to PS-26, "CHECKING
RELIEF OIL PRESSURE" .
7. If steering column and power steering oil pump meet specifications, replace steering gear. Refer to PS-15,
"Removal and Installation" . End play of the axial direction for steering wheel : 0 mm (0 in)
LGIA0024E
Steering wheel play on the outer circumference : 0 − 35 mm (0 − 1.38 in)
Tool number : J-44372
Steering wheel
turning force: 39 N (4 kg-f, 9 lb-f) or less
WGIA0035E

PS-26
POWER STEERING OIL PUMP
Revision: October 20052005 QX56
POWER STEERING OIL PUMPPFP:49110
On-Vehicle Inspection and ServiceEGS000UJ
CHECKING RELIEF OIL PRESSURE
CAUTION:
Before starting work, confirm belt tension is proper.
1. Connect Tool between oil pump discharge connector and high
pressure hose and then bleed air from the hydraulic circuit.
2. Start engine. Allow engine to run until tank temperature reaches 50 – 80°C (122 – 176°F).
CAUTION:

Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed,
fluid pressure in power steering pump increases to maximum. This will raise fluid temperature
excessively.

Be careful not to contact hose with belt when engine is started.
3. With engine at idle, close shut-off valve and read the relief oil pressure.
CAUTION:
Do not close shut-off valve of pressure gauge for more than 10 seconds.
4. After measurement, open shut-off valve slowly.

If relief oil pressure is outside the specification, disassemble and repair oil pump. Refer to PS-17, "Dis-
assembly and Assembly" .
5. After inspection, disconnect oil pressure gauge and oil pressure gauge adapter from hydraulic circuit, con-
nect oil pump discharge connector and high pressure hose. Add fluid and bleed air from hydraulic circuit
thoroughly. Refer to PS-6, "
Air Bleeding Hydraulic System" .
Removal and InstallationEGS000UK
REMOVAL
1. Drain power steering fluid from reservoir tank.
2. Remove engine room cover. Refer to EM-11, "
Removal and Installation" .
3. Remove air duct assembly. Refer to EM-14, "
Removal and Installation" .
4. Remove power steering reservoir tank.
5. Remove serpentine drive belt belt from auto tensioner and power steering pump. Refer to EM-12,
"Removal and Installation" .
6. Disconnect pressure sensor electrical connector.
7. Remove high pressure and low pressure piping from power steering oil pump. Refer to PS-31, "
HYDRAU-
LIC LINE" .
8. Remove mounting bolts, then remove power steering pump.
INSTALLATION
Installation is in the reverse order of removal. Refer to PS-31, "HYDRAULIC LINE" for tightening torque.

After installation, bleed air. Refer to PS-6, "Air Bleeding Hydraulic System" .
NOTE:
Belt tension is automatic and requires no adjustment.
Tool number:
Pressure gauge and shut-off valveKV48103500
(J26357 and J26357-10)
Oil pump sideConnector A and
O-ringKV48105300-4 and 5295262U10
(—)
Eye-bolt and O-ringKV48105300-3 and 5295262U00
(—)
High pressure
piping sideConnector B and
O-ringKV48105300-1 and 5295262U00
(—)
NutKV48105300-2
( — )
Relief oil pressure
: 9.0 – 9.8 mPa (91.77 – 99.93 kg/cm2 , 1305.34 – 1421.37 psi)
SGIA0570E